This is a plastic H lense for a US&S HC9 Signal head. H for Hazard detector tripped ahead. It's in nice shape, some scratches.
1960 Baltimore and Ohio B&O Railroad Traffic Department Ticket Agent Instruction
Safetran Red 12" Plastic Railroad Traffic Crossing Signal Light Lens Lot Of 2
Vintage "K" Lamp Lantern Railroad Traffic Signal Red Glass Lens 5 1/2" C04
Vintage "K" Lamp Lantern Railroad Traffic Signal Blue Glass Lens 5 1/2" C04
Vintage Chalwyn Railroad Traffic Kerosene Lantern Red Made in England
1 Vintage Clear Glass Lens 8 3/8 D 1 3/4 F Railroad? Traffic Signal? Headlight?